Best to PM him, I know he go a better price on slightly larger diameter material so the newest ones will be even beefier. I also know that it's pretty much a "small run" contingent deal where once he has enough folks committed, he does another 10 sets or so. Another big benefit (as I see it) is the larger (thicker) rings at the end holding the pressed in bushings....they extend beyond the mounting bracket to protect them from impact damage.
The beauty of extended LCA's is you correct pinion angle for the stock shaft and also set wheelbase back to stock (@ 4" of lift I think for these arms), which means no $$$ required for messing with adjustable UCA's.
When you extend the lower control arm when you stuff the tire wont it put it further back in the wheel well?
Forget it I answered my own question: your just rotating the axle to correct pinion not actully moving it back right?
When you lifted the vehicle with the stock LCA's, you brought the axle forward a bit, then under compression it arcs back into original position, yes... so when you extend the LCA it recenters the wheel in the wheel well at lift height. So yes, under full compression, the tire is further back in the wheel well but since the extension is such a small increment, it doesn't create any rubbing issues. At least in the case of 315's and 4 inches of lift.